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Tue, 7 Jul 2020 07:50:10 +0000 From: Peter Chen To: balbi@kernel.org, mathias.nyman@intel.com, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com, pawell@cadence.com, rogerq@ti.com, jun.li@nxp.com, Peter Chen Subject: [PATCH v5 8/9] usb: cdns3: host: add .suspend_quirk for xhci-plat.c Date: Tue, 7 Jul 2020 15:49:40 +0800 Message-Id: <20200707074941.28078-9-peter.chen@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200707074941.28078-1-peter.chen@nxp.com> References: <20200707074941.28078-1-peter.chen@nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR02CA0022.apcprd02.prod.outlook.com (2603:1096:3:17::34) To AM7PR04MB7157.eurprd04.prod.outlook.com (2603:10a6:20b:118::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from b29397-desktop.ap.freescale.net (119.31.174.67) by SG2PR02CA0022.apcprd02.prod.outlook.com (2603:1096:3:17::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3153.22 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3a8dd5df-c68d-4848-b378-08d8224a5f8c X-MS-Exchange-CrossTenant-AuthSource: AM7PR04MB7157.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2020 07:50:10.1086 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MUGRR7iNFzOlFtQP/hX1d/q732mumKVaNFYqT12d/j3Fn5uEcc06lkHcHCf9GQ3C0x6IE1SM4mW/KjnMLWYh8w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB5608 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Signed-off-by: Peter Chen --- drivers/usb/cdns3/host-export.h | 6 +++++ drivers/usb/cdns3/host.c | 40 +++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/drivers/usb/cdns3/host-export.h b/drivers/usb/cdns3/host-export.h index ae11810f8826..26041718a086 100644 --- a/drivers/usb/cdns3/host-export.h +++ b/drivers/usb/cdns3/host-export.h @@ -9,9 +9,11 @@ #ifndef __LINUX_CDNS3_HOST_EXPORT #define __LINUX_CDNS3_HOST_EXPORT +struct usb_hcd; #ifdef CONFIG_USB_CDNS3_HOST int cdns3_host_init(struct cdns3 *cdns); +int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd); #else @@ -21,6 +23,10 @@ static inline int cdns3_host_init(struct cdns3 *cdns) } static inline void cdns3_host_exit(struct cdns3 *cdns) { } +static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd) +{ + return 0; +} #endif /* CONFIG_USB_CDNS3_HOST */ diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c index b579ef15f4e0..030d6421abd3 100644 --- a/drivers/usb/cdns3/host.c +++ b/drivers/usb/cdns3/host.c @@ -14,6 +14,18 @@ #include "drd.h" #include "host-export.h" #include +#include "../host/xhci.h" +#include "../host/xhci-plat.h" + +#define XECP_PORT_CAP_REG 0x8000 +#define XECP_AUX_CTRL_REG1 0x8120 + +#define CFG_RXDET_P3_EN (1 << 15) +#define LPM_2_STB_SWITCH_EN (1 << 25) + +static const struct xhci_plat_priv xhci_plat_cdns3_xhci = { + .suspend_quirk = xhci_cdns3_suspend_quirk, +}; static int __cdns3_host_init(struct cdns3 *cdns) { @@ -39,6 +51,11 @@ static int __cdns3_host_init(struct cdns3 *cdns) goto err1; } + ret = platform_device_add_data(xhci, &xhci_plat_cdns3_xhci, + sizeof(struct xhci_plat_priv)); + if (ret) + goto err1; + ret = platform_device_add(xhci); if (ret) { dev_err(cdns->dev, "failed to register xHCI device\n"); @@ -56,6 +73,29 @@ static int __cdns3_host_init(struct cdns3 *cdns) return ret; } +int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + u32 value; + + /* set usbcmd.EU3S */ + value = readl(&xhci->op_regs->command); + value |= CMD_PM_INDEX; + writel(value, &xhci->op_regs->command); + + if (hcd->regs) { + value = readl(hcd->regs + XECP_AUX_CTRL_REG1); + value |= CFG_RXDET_P3_EN; + writel(value, hcd->regs + XECP_AUX_CTRL_REG1); + + value = readl(hcd->regs + XECP_PORT_CAP_REG); + value |= LPM_2_STB_SWITCH_EN; + writel(value, hcd->regs + XECP_PORT_CAP_REG); + } + + return 0; +} + static void cdns3_host_exit(struct cdns3 *cdns) { platform_device_unregister(cdns->host_dev); -- 2.17.1